The difference between them is different job responsibilities, salary and status.

1. Different job responsibilities: The job responsibilities of the waiter are to introduce the tastes of various dishes according to the contents of the guests' orders, guide the customers to sit down, pour wine and water, and introduce preferential activities. The messenger is responsible for delivering the dishes and food cooked in the kitchen to the restaurant and delivering them to the guests in time.

2. Different salary and status: In the catering industry, the salary and status of waiters are usually higher than those of dish delivery staff. This is because waiters play a more important role in catering services and need to have richer knowledge and skills. In contrast, the work of the food delivery staff is relatively simple, mainly mechanical delivery of food, so the salary and status are relatively low.